US5315275A - Electromagnetic relay and method of adjusting same - Google Patents
Electromagnetic relay and method of adjusting same Download PDFInfo
- Publication number
- US5315275A US5315275A US08/160,198 US16019893A US5315275A US 5315275 A US5315275 A US 5315275A US 16019893 A US16019893 A US 16019893A US 5315275 A US5315275 A US 5315275A
- Authority
- US
- United States
- Prior art keywords
- normally
- open contact
- finger
- cavity
- drawer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/548—Contact arrangements for miniaturised relays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/34—Contacts characterised by the manner in which co-operating contacts engage by abutting with provision for adjusting position of contact relative to its co-operating contact
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49105—Switch making
Definitions
- relays are employed.
- small-size relays so-called microrelays, which need very little mounting space and which, therefore, lend themselves particularly well to being integrated into complex electronic circuits, are increasingly preferred.
- This method proves to be particularly cost-effective if the adjustments can be fully automatic during relay assembly.
- An important distance or space for the proper function of a relay is represented by a contact space between a normally-open contact and a movable switch contact arranged on a switch contact spring for a relay that has not been activated.
- An electromagnetic relay is known from German Offenlegungsschrift DE-OS 34 23 271 in which an L-shaped beam on a coil frame forms a measuring level.
- this known relay is first placed on a measuring device. Thereafter, by means of a sensing device, various spacings between relay components and the reference level are determined. In a further step, by using these measured spacings, the normally-open contact of the relay is adjusted.
- This known relay is thereby constructed in a relatively expensive manner. Also, the measuring and adjusting procedure is relatively complex, since it is carried out by a plurality of series process steps.
- a relay with a base plate is already known from German Offenlegungsschrift OS-DE 27 05 961 in which L-shaped fixed contacts are held and with their free ends supported.
- the supports are at fixed engagement points with relay components, in particular with an electromagnetic coil frame. Because of this, an exactness of contact spacing is, in turn, dependent upon tolerances of relay components which, as already explained, particularly for microrelays, causes problems. A later adjustment of contact spacing is not provided here.
- a normally-open contact tongue has at least one finger which engages in a drawer-cavity-forming element of a base plate and is affixed therein.
- a particularly stable affixing of the normally-open contact tongue can be achieved by having a plurality of base plate drawer-cavity-forming elements in which a plurality of fingers, extending from a normally-open contact tongue, engage.
- FIG. 1 is a cross-sectional view of a relay according to this invention during assembly thereof;
- FIG. 2 is a side view, rotated 90° from the FIG. 1 view, of a fully assembled relay.
- FIG. 1 shows, in cross section, a relay of this invention which is not yet fully assembled, or fabricated.
- the relay has a base plate 1 through which a plurality of terminal tongues, or contact tongues, 2, 7, and 8 extend and to which the tongues are affixed.
- the terminal tongue 7 supports a normally-closed contact 10.
- a switch-contact spring 5, which is rivetted to an armature 6, is joined to the terminal tongue 8 by means of a connecting element 11.
- the substantially L-shaped, normally-open contact tongue 2 is inserted into a slot 14 of the base plate 1 and is affixed therein.
- the normally-open contact tongue 2 has on a short leg thereof a normally-open contact 3.
- FIG. 1 shows the relay of this invention during a mounting stage thereof, i.e., during an adjustment of the position of the normally-open contact 3 relative to the position of an upper switch-contact 4a.
- a yoke dummy 12 is shoved into a guiding slot 16 which shoves the armature 6 into approximately a position which it will assume in a fully assembled relay.
- An adjusting stamp 13 shoves the short leg of the normally-open contact tongue 12 in a direction of the base plate 1 while a measuring apparatus, which is not shown in the drawing, having a calculator associated therewith, monitors a spacing between the normally-open contact 3 and the upper switch-contact 4a.
- the calculator associated with the measuring apparatus compares the measured spacing with a stored desired spacing and controls movement of the adjusting stamp 13 accordingly.
- the adjusting stamp 13 shoves, under tension, the short leg of the normally-open contact tongue 2 until the compared spacings correspond.
- the normally-open contact tongue 2 has at an end portion of its short leg a finger 24a which extends, or engages, in a cavity of a "drawer-cavity-forming" element 25 (that is, an element which resembles a drawer cabinet) which is formed on, or integral with, the base plate 1.
- a "drawer-cavity-forming" element 25 that is, an element which resembles a drawer cabinet
- the at least one finger 24a is automatically affixed to the drawer-cavity-forming element 25 in the interior thereof in response to a signal from the measuring apparatus.
- the normally-open contact tongue 2 is normally made of a metal and the base plate 1 as well as its integral members, such as the drawer-cavity-forming element 25, are normally made of a resinous plastic material, ultrasound welding to automatically create deformed weld material is particularly suited to affix the at least one finger 24a within the cavity of the drawer-cavity-forming element 25.
- the affixing of the finger 24a can, however, be carried out automatically by means of deformed, or hardened, material created by hot-stamping or by means of a fast-hardening adhesive.
- FIG. 2 shows a view of a fully assembled relay.
- This Figure shows, in addition to the structure which can be seen in FIG. 1, a magnetic unit which comprises a magnetic coil 18, a coil core, and a magnetic yoke, with the magnetic yoke being rivetted to the coil core.
- This magnetic unit which can also be referred to as a yoke-rivet-group 19, is not described here in more detail.
- FIG. 2 especially makes clear the affixing of the normally-open contact tongue 2.
- the normally-open contact 2 has at its end portion a substantially U-shaped portion 26 (U-shaped when seen from its end), with fingers 24a and 24b being legs (which form the fingers 24a and b) of this U-shaped portion. Both fingers 24a and 24b extend into the hollow cavities of their drawer-cavity-forming elements 25a which are respectively formed on the base plate 1 to have cylindrical or rectangular shapes.
- a bent portion of the normally-open contact tongue 2 has a reduced strength relative to adjacent portions of the tongue 2 so that as the position of the short leg is adjusted a pivoting deflection will take place more easily at the bent portion.
Abstract
Description
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4243841A DE4243841C1 (en) | 1992-12-23 | 1992-12-23 | Electromagnetic relay |
DE4243841 | 1992-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US5315275A true US5315275A (en) | 1994-05-24 |
Family
ID=6476392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/160,198 Expired - Fee Related US5315275A (en) | 1992-12-23 | 1993-12-02 | Electromagnetic relay and method of adjusting same |
Country Status (4)
Country | Link |
---|---|
US (1) | US5315275A (en) |
DE (1) | DE4243841C1 (en) |
ES (1) | ES1026622Y (en) |
FR (1) | FR2699732B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6266867B1 (en) * | 1997-10-24 | 2001-07-31 | Tyco Electronics Logistics Aktiengesellschaft | Method of making a relay |
US20060066424A1 (en) * | 2004-09-29 | 2006-03-30 | Hella Kgaa Hueck & Co. | Electromagnetic relay |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2705961A1 (en) * | 1976-02-19 | 1977-08-25 | Lucas Industries Ltd | ELECTROMAGNETIC RELAY |
US4182998A (en) * | 1977-05-23 | 1980-01-08 | Siemens Aktiengesellschaft | Externally adjustable electromagnetic relay |
US4368574A (en) * | 1979-05-09 | 1983-01-18 | Societe Anonyme Dite: La Telephonie Industrielle Et Commerciale - Telic | Method of assembling a relay |
US4533889A (en) * | 1983-12-14 | 1985-08-06 | Amf Incorporated | Relays and method for mounting relays on printed circuit boards |
DE3423271A1 (en) * | 1984-06-23 | 1986-01-02 | Robert Bosch Gmbh, 7000 Stuttgart | Electromagnetic relay |
US4577173A (en) * | 1983-10-20 | 1986-03-18 | Siemens Aktiengesellschaft | Electromagnetic relay and method for manufacturing such relay |
US4742610A (en) * | 1985-12-05 | 1988-05-10 | Siemens Aktiengesellschaft | Method for adjustment-free manufacture of an electromagnetic relay |
US4870378A (en) * | 1987-02-13 | 1989-09-26 | Siemens Aktiengesellschaft | Electromagnetic relay and method for its manufacture |
US5155459A (en) * | 1988-10-12 | 1992-10-13 | Robert Bosch Gmbh | Electromagnetic relay |
US5177459A (en) * | 1991-04-24 | 1993-01-05 | Meister Jack B | Modular, electrical relay, and a coil and plunger assembly and a contact and terminal base assembly therefor |
US5909379A (en) * | 1995-10-19 | 1999-06-01 | Snap-On Technologies, Inc. | Custom vehicle wheel aligner |
-
1992
- 1992-12-23 DE DE4243841A patent/DE4243841C1/en not_active Expired - Fee Related
-
1993
- 1993-12-02 US US08/160,198 patent/US5315275A/en not_active Expired - Fee Related
- 1993-12-20 ES ES9303366U patent/ES1026622Y/en not_active Expired - Fee Related
- 1993-12-22 FR FR9315454A patent/FR2699732B1/en not_active Expired - Fee Related
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2705961A1 (en) * | 1976-02-19 | 1977-08-25 | Lucas Industries Ltd | ELECTROMAGNETIC RELAY |
US4182998A (en) * | 1977-05-23 | 1980-01-08 | Siemens Aktiengesellschaft | Externally adjustable electromagnetic relay |
US4368574A (en) * | 1979-05-09 | 1983-01-18 | Societe Anonyme Dite: La Telephonie Industrielle Et Commerciale - Telic | Method of assembling a relay |
US4577173A (en) * | 1983-10-20 | 1986-03-18 | Siemens Aktiengesellschaft | Electromagnetic relay and method for manufacturing such relay |
US4533889A (en) * | 1983-12-14 | 1985-08-06 | Amf Incorporated | Relays and method for mounting relays on printed circuit boards |
DE3423271A1 (en) * | 1984-06-23 | 1986-01-02 | Robert Bosch Gmbh, 7000 Stuttgart | Electromagnetic relay |
US4742610A (en) * | 1985-12-05 | 1988-05-10 | Siemens Aktiengesellschaft | Method for adjustment-free manufacture of an electromagnetic relay |
US4870378A (en) * | 1987-02-13 | 1989-09-26 | Siemens Aktiengesellschaft | Electromagnetic relay and method for its manufacture |
US5155459A (en) * | 1988-10-12 | 1992-10-13 | Robert Bosch Gmbh | Electromagnetic relay |
US5177459A (en) * | 1991-04-24 | 1993-01-05 | Meister Jack B | Modular, electrical relay, and a coil and plunger assembly and a contact and terminal base assembly therefor |
US5909379A (en) * | 1995-10-19 | 1999-06-01 | Snap-On Technologies, Inc. | Custom vehicle wheel aligner |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6266867B1 (en) * | 1997-10-24 | 2001-07-31 | Tyco Electronics Logistics Aktiengesellschaft | Method of making a relay |
US20060066424A1 (en) * | 2004-09-29 | 2006-03-30 | Hella Kgaa Hueck & Co. | Electromagnetic relay |
US7116193B2 (en) * | 2004-09-29 | 2006-10-03 | Hella Kgaa Hueck & Co. | Electromagnetic relay |
Also Published As
Publication number | Publication date |
---|---|
ES1026622U (en) | 1994-05-16 |
FR2699732A1 (en) | 1994-06-24 |
FR2699732B1 (en) | 1996-08-30 |
DE4243841C1 (en) | 1994-01-27 |
ES1026622Y (en) | 1994-11-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HELLA KG HUECK & CO., GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOFFMANN, WOLFGANG;KOERNER, ANDRE;ZIMMER, MAIK;REEL/FRAME:006793/0109 Effective date: 19931122 |
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FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
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AS | Assignment |
Owner name: DEUTSCHE AUTOMOBILGESELLSCHAFT MBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:IMHOF, OTWIN;KISTRUP, HOLGER;KITZHOEFER, WILHELM;REEL/FRAME:006897/0382;SIGNING DATES FROM 19931129 TO 19931205 Owner name: DAUG-HOPPECKE GESELLSCHAFT FUER, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:IMHOF, OTWIN;KISTRUP, HOLGER;KITZHOEFER, WILHELM;REEL/FRAME:006897/0382;SIGNING DATES FROM 19931129 TO 19931205 |
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FEPP | Fee payment procedure |
Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
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FPAY | Fee payment |
Year of fee payment: 4 |
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REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20020524 |